How many oxygens are in a pentoxide?​

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Identify the theory that can be used to explain each phenomenon. answers diffraction: wave theory interference: wave theory reflection: both particle and wave theories refraction: both particle and wave theories

In which type of system is power held solely by the central government and not shared with regional governments? group of answer choices federal unitary confederate oligarchic